Keychat

A super app isn’t an “everything app.” Watch Keychat’s intro video, and you’ll see exactly where it fits best—and why that framing makes sense. View quoted note →

All Keychat messages (whether one-to-one, small group, or large group) can be intuitively understood using the metaphor of a "letter.” 👇 View quoted note →

The original Signal protocol operates over a private network; when applied to Nostr, a public network, the privacy issue becomes more pronounced. Although the eavesdropper cannot decrypt the message's content, if the sender's (or recipient's) address remains unchanged, the eavesdropper can still analyze the identity and other information from the communication frequency, timing, etc. Address refresh means Alice updates the receiving address when sending a new message. The new address is the DH ratchet's new pubkey. When the new address receives a message from Bob, Alice can ensure Bob receives the new address. Alice should listen to the old addresses for some time to avoid missing messages or delays. View quoted note →